Perforator attachment for presses



C. E. RYDER.

PERFORATOR ATTACHMENT FOR PRESSES. APPLICATloN FILED MAY 22, 1919.

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PERFORATVOR ATTACHMENT non PRESSES.

Spefcificationof Letters Patent. y

Patented oet. 19,1920.

Application led May 22, 1919. Serial No. 298,943. i

To all whom it may concern:

Be it known that I, CLAIR E.` RYDER, a citizen of the United States of America, and resident of Sioux Rapids, Buena Vista county, Iowa, have invented a new and useful Perforator Attachment for Presses, of which the following is a speciication.

The object of this invention is to provide 'improved means for perforating a sheet, on

either horizontal or perpendicular: lines, during the operation of printing said sheet, without subjecting the perforating element or elements to contact with inlring rollers.

A further object oit this invention is to provide improved means for gripping a sheet to a tympan conjunctively with perforating said sheet on selected lines'during the operation of printing said sheet, and utilizing the gripping means for stripping the sheet from the periorator, vwithout shifting the sheet laterally of the tympan or in any manneratfecting its` register or imprint.`

A further object of this invention is to .A 'provide an improvedmeans for connecting a lateral bar to a perpendicular bar.

An further object of this invention is yto provide improved means v:tor -vmaking intersecting lines of perforations inV a sheet during the operation of printingsaid'sheet.

My invention consists in theI construction, arrangement and combination of. elements Vhereinafter `set forth, pointed out in "my claims and illustrated bythe accompanying i V drawing, in which-- carry two lFigure 1V is an elevation illustrating one 1 form or assemblage of my improved devices. `Fig. 2' is an elevation, partly in sectiomon an enlarged-scale, of parts of the devices. 1U-Fig. 3, is a cross-section on the indicated 'line 3-3 of Fig. 1, on an enlarged scale,a ypart of the lateral bar being shown in section to reveal interior construction. Fig. 4 is a cross-section on theindic'ated line` 4-4 45 ofFig. 1on an enlarged scale.y v

In the constructionof "the device as shown the numeral 10 designates avcgripper bar now common and wellknown in flat-bed platenfpresses and `usually employed-to gripper arms, arranged perpendicular to the bar adapted to hold a sheet of paper or other material to be printed against a tympan. In my improvedconstruction one or both-of the ordinary grip- Vper arms kare omittedy andl in lplace thereof combined gripper and perforator devices are substituted, which devices are'carried by the gripper bar and moved through an arc thereby. The devices are made `andassembled of such thickness as not to restrict or limit the. impression of the type on the sheet `and yet serveto effect perforation of said :sheet as desired and voperate to strip ytlieslieet from the type and from the perforating elements.

y In the drawing' I have shown the omission of both the ordinary grippery arms and substitution therefor of two combined vgripper 'and perforator de vices; but it is to be understood that'as to one of saidV devices the perforating element may be omitted or a modified common arm may beeniployed. Each ofthe combined gripper and perforator devices is constructed as follows:.An arm.11 is secured.I lat one end to the bar y10'preferably a bolt 12 andeXtends perpendicularto ysaid bar and is adapted to be moved through an'v arc by ordinary'oscillation'of said bar to and from a position in a printing formrbe-y tween orl at one end of the type therein and `over and in contact with furniture used in a vcommon manner to assemble said form. -Ajlongitudinal groove 13 is k formed in the `arm 11 vand'opens therefrom toward the tympan, anda perforator plate 14, having perforating elements 'such `as teeth 15 soi formedon one margin, ismounted insaid -groove and thetoothed marginal portionv of said plate projects from' said groove to- `ward .said tympan. `The plate 14;` may be secured tothearm 1`1`inv any desired manner; `but v.preferably "is removable and replaceable and the fastening meansshould be convenient of manipulation and effective `in maintaining a rigid y[connection Forv` that purpose I f have shown set screwsl seated infthe arm 11 and intersecting the groove 13 and adapted to engage andlockv the plate A14 in the groove. Anyother suit- "able' fastening Vmeans fmay be4 employed, such as wedges orV dovetailing elements.

The combined thickness'gof the underlying furniture; bar 11 and projecting toothed portion of the plate-14 issubstanti'allyy equal Ato orslightly greater than the height of type used in theform`in order that, when ing the `underlying furniture; Astipper '417 is arranged parallel kwith the grooved 'an impression is made.the toothed margin face of the arm 11 and is provided With a series of pins 18 (five of said pins being indicated) rigidly secured by one end each t0 said stripper preferably by sweating or brazing. The pins 18 extend loosely Within holes 19 extending through the arm 11 at right angles to the set-screws 16 and lit snugly yet slidingly therein. One end of each hole 19 is enlarged to form a chamber 2O surrounding a pin 18 and expansive coil springs 21 are mounted in the chambers 20, surround the pins and exert a yielding influence to separate the stripper from the arm. In the case of most of the pins 18, in this instance four, the outerA ends of the springs 21 bear directly on the inner surface of the stripper; but as to the central pin additional expansion is desired. Therefore, a leaf spring 22, ot' semi-elliptic type, is mounted at its center on the central pin 18, bears at its center on the inner surface of the stripper 17 and receives expansion and support from the central spring 21, extends between the stripper and arm 1.1

r and bears at its ends on the adjacent face of said arm. The pins 18, spring 22, springs 21 and stripper 17 are arranged at one side of the plate 14 and said stripper is susceptible of compression toward the arm 11, at

each impression of the sheet, sufficiently to carry the stripper Wholly beyond a plane common to the outer ends of the teeth of the plate` thus permitting the teeth to penetrate said sheet. The arrangement of pins and springs relative to the arm 11 and stripper 17 is such that they prevent longitudinal or sideivise movement of the stripper under and during the impression movement and thus prevent lateral movement of the sheet 'or 'creeping` that Would affect the register of the impression. When the impression is relaxed the stripper is moved outwardly `or separated from the arm 11 bythe interposed springs 21, 22 and effects a stripping of the sheet from the teeth of the perforating plate.

The construction thus far Vdescribed covers the use of the improvements in making one line `or parallel lines of perforations, dependent on Whether one or more of the devices is employed. However, it is desirable at times to make another or other lines of perforations at right angles to the primary perpendicular line jor lines.V To this end one or m'or'e additional orsupplem'ental arms 11a, 11'b vare employed. `Each of the arms 11, 11b is equipped with a stripper, pins, springs, and-a perforat-i-ng plate identical, 'except as hereinafter noted, Wit-h the equipment ofthe primary arm 11 and is used and operated in substantially the same manner and coincident therewith and with the same result as `to perforating and stripping and overly-ing interposed and spacing `furniture. Each arm 11a, 11", is formed with end portions having dove-tail mortises 23 lying at right angles to the groove therein for the perforator plate and'each end portion is formed vith a slot 24 also at right angles to said groove and opening to a mortise at its outer end. Shouldered set-screws 25, in'this instance one for each end portion, are mounted loosely in the outermost arm of each fork, extend across the slots 24 and are seated in the opposite arm. It is the function of the set-screws 25 to contract the slotted ends of the arms 11a, 111. Each arm 11 is formed vWith dove-tail tenons 26 adapted to be received in the dove-tail mortises of the arms 11, 11b and be gripped by the end portions of the arms to locate and retain said arms in desired relative arrangement. The perfor-ating plates in the arms 11, 11b preferably are notched at their ends so that toothed portions thereof may extend across the planes of the tenons 2G and into intimate relation with the plates 14 on the arms 11. Thus each transverse line of perforations is caused to approach closely to or intersect the perpendicular line or lines of perforations.

Sometimes the spacing of type-forms in a given chase is quite narrow, as in the printing of coupon bonds or mortagages or small checks or receipts and it is desirable to limit the Width of the perforating devices and supports therefor to the accommodation of said spaces.

When it is desired to limit the pertorating to one perpendicular line, a common gripper may be substituted for one of the de- .vices 11 and, at other times, the device as shown may be employed With one or more of the perforating plates 14 removed.

I do not desire to be understood as limited to anyV precise construction shown as the same maybe modified in various particulars.

I claim as my invention- 1. A perforator attachment for presses, comprising an arm formed with -a groove, a separate perforator plate rigidly held in and projecting outside of said groove, a stripper arranged parallel with said arm and also parallel with a transverse plane of the plate when extended said strlpper being nadapted for movement toward and away from said arm and across the plane of the outer margin 'of said pertorator plate, pins fixed to said-stripper and slidingly engaging said arm "and springs inter-posed between said stripper and arm.

i2. A perforator attachment for presses, comprisingr an arm formed with a groove, a separate perforator plate rigidly heldin and projecting outside of said groove, pins kloosely mounted in said arm adjacent said groove, coil springs on said pins, anda stripper fixed to said pins an overlying sald springs, said pins .serving to guide and prevent lateral and longitudinal movement of said stripper.

3. A perforator attachment for presses, comprising an arm Jformed with a groove, a separate perforator plate held rigidly yet removably in and projecting outside of said groove, pins slidably mounted in said arm and projecting therefrom, said pins being arranged in a row parallel With and adjacent to said perforator plate, said arm being formed with chambers surrounding said pins, coil springs on said pins and extending Within said chambers, a stripper mounted rigidly on the outer ends of said pins and overlying said springs, a leaf spring being interposed between said stripper and one of said coil springs, said stripper being normally spaced from said arm a distance greater than the projection of said perforator plate, said stripper being normally heldl yieldingly in its outermost position by said springs.

Signed at Sioux Rapids, in the county of Buena Vista and State of Iowa, this 10th day of May, 1919.

CLAIR E. RYDER. 

